Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d49652432b2a0f…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 22:05:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 068bbe3f9365270ee2b5a1a2281d4d8f SHA-1: 1aeafa8536740650f87c64a573137f6f1cfbbbd1 SHA-256: 11d49652432b2a0f2d65a6b12cbfd833c1831825d3a9718912945e8925abd946
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to external websites, including a known malicious redirector, disguised as generators for free game currency or hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious sites. No scripts were extracted, but the presence of numerous malicious links indicates a high likelihood of redirecting users to a compromised or malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/431946152/free-robux-without-survey-game-hack In PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pubg-600-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F4 24972 bytes
SHA-256: a318959ba2a936899780cd58f026d46738d49a26ce1fb195f3f5a2ff341e2811
font_01_sfnt_off0000889d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889D 18896 bytes
SHA-256: b0c1a7c96aa264be318e1ab456a0b915a72e0bc05fcf36e1ad74b726c9d43bb5

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